After banging my head againt the wall for a while, i
discovered the problem i'm having stems from template
instantiation with consts. The compiler doesn't like two
member functions in a template class differing by only a
const... Something like

int operation[](int x) const;
int operator[](const int x);

It compiles better if i remove the AC_C_CONST check from
configure.in, but won't link now...